Drink mixer



Dec. '11',"1923, 1,477,202l

D. R. McKlLLlcAN DRINK MIXER 5 Sheets-Sheet 1 Filed May 31, 1921 w my vwentoz 41M atten/wg Dec. 11 1923. l

D. R. McKlLLlcAN DRINK MIXER Filed May 5l. 1921 5 Sheets-Sheet 2 vwantoz Dec. 11 1923.` 1,477,202

D. R. MCKILLlcAN DRINK MIXER Filed May :51,l 1921 3 .sheets-sheet :s

Patented Dec. l1, 1923.

NITED- r DONALD RMCKILLIOAN, or NEW YORK, N. Y., AssreNon To MECHANICAL Mixnns CORPORATION, or NEW'YoR-x, N.

Y., A ooRPonnfrioN ornnnnwnnn. t

DRINK MIKE-n.

Application filed May 31, 1921. Serial No. 473,738.

T o aZZ 'whom it may concern:

Be it known that I, DONALD R. MOKILLI- CAN, a citizen of the United States, residing in the city of New York, county of New York, and State of New York, have in` vented a new and useful Improvement in Drink Mixers, of which the following is a specification.

My invention relates broadly to agitators for the intimate mixing of substances in general, more particularly to the mixing of food products, and specifically to soda fountainl drink mixers.`

Reference is made to my co-pendingapplication for agitators, filed January 27th,

1921, Serial No. 440,293, vupon'which this whereby the motor will only be started when" in driving relation with the agitatonthus improving the smoothness of operation of the device.

Other objects consisting of improvements of the various parts and their arrangements will appear from the following de` tail description of the'preferred construction and be pointed out in the claims:

Referring to the accompanying drawings:

Fig. 1 is a side view of my drink mixer, also showing the shaker cup and the improved switch operating mechanism with the switch closed;

Fig. 2 is a plan view of same with the shaker cup removed, the switch open and one of the clutch members thrust to the left, partly broken away to show the switch oper ating mechanism more clearly; and

Fig. 3 is a perspective View of the devices as in Fig. 1.

The numeral 1 indicates a base upon which is mounted a motor 2 having a shaft 3 upon which is mounted a clutch member 4 having longitudinal freedom of motion on the shaft 3. Shaft 3 is provided with a tight collar 5, carrying pins 6, which enter loosely into clutch member 4 and cause it to rotate with shaft 3. Around shaft 3 is coiled a compression spring 7, which thrusts against tight collar 5 and clutch member 4, normally holding` it in the position of Fig. 2.

which is secured to the motor 2 and the base 1 by screws 9 and to the top of the motor 2 by the screw 10. Casing 8 extends to the top of the motor 2 and tO the right to enclose the conductors 11 which continue to the right and terminate in the flexible cord plug 12. The casing`8 contains any standard type spring-opened switchy which is operated by the push rod 13 in the usual manner. l

Push rod 13 is bent in the form, of a ZV and isretained with freedom of longitudinal motion inthe bearing block 14, which rests on top of positioning slide 15. Screws 16 attach both bearing block 14 and. slide 15 to vbase 1. Positioning slide 15 is similar in construction to the .corresponding mem-V ber in the vformer of my previously men-` 'i tioned co-pending. applications.

The shaker cup 17, which is similar to that shown inthe latter of my previously mentioned co-pending applications, when placed in position causes its clutch member 18 to rst engage the clutch member 4 and artially compress the spring 7, after w ichf and starts the motor 2. By this 'arrangementit will be noted that the switch 8 is not closed except when the clutch members' 4 and V18 are in driving relation, thus the clutch members do not tend to slip and wear upon each other and the smoothness of acceleration o'f they members driven by clutch member 19 is increased.

I claim:

1. A. soda fountain drink mixer consisting of a base, a motor having a laterally extending shaft and mounted on thebase, a clutch member mounted on the shaft, a spring-opening switch at the motor having an operative projection and a shaker cup having a matingclutch member designed to be slid laterally onto the base by an `operator and to first automatically establish driving relation between the two clutch members and subsequently to close the switch against vthe spring. l

2. A soda fountain drink mixer consisting of a base, a motor 'havin a laterally extending shaft and. mounte on the base, a clutch member mounted on the shaft and having longitudinal Jfreedom o movement thereon, a spring at the shaft to thrust the clutch member away from the motor, a positioning device at the base, a shaker cup carrying a mating positioning device and a mating clutch member designed to engage the rst mentioned clutch member and compress the Spring and .a spring-opening lswitch at the base '01 :themotor having an operative projection designed to engage l0 lation.

DONALD R. MCKILLICAN. 

